USSR
Stamp from Souvenir sheet.
Not listed by SG.
Not listed by SG.
| Country: | USSR |
| Type: | Postage stamps |
| Series: | International Space Cooperation |
| Nominal: | 50 k |
| Year: | 1978 |
| Size: | 37 x 52 mm |
| Perforation: | frame 11½ x 12¼ |
| Mintage: | 1,450,000 |
International Space Cooperation
 Space Meteorology 0.05$ |  Research of Natural Resources 0.21$ |  Space Communications 0.05$ |  Space Biology & Medicine 0.08$ |
 Space Physics |